Shoe-repair jack.



J. H. OBRIEN.

SHOE REPAIR JACK.

APPLICATION FILED APR. 5. was.

L2w,355. Patented Dec. 26,1916.

TETTTED STATES PATENT @T TTQE.

JOHN H. OBRIEN, 0F FORT WAYNE, INDIANA, ASSIGNOR OF ONE-HALF 'IO JESSE E. MILLS, OF FORT WAYNE, INDIANA.

' SHOE-REPAIR JACK.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application filed April 5, 1916. Serial No. 89,190.

To all whom it m ay concern Be it known that 1, JOHN H. OBRIEN, a citizen of the United States, residing at 827 Barr street, Fort Wayne, in the county of Allen and State of Indiana, have'invented certain new and useful Improvements in Shoe-Repair Jacks, of which the following is a specification.

This invention relates to an improvement in shoe repair jacks.

The primary object of the invention is to provide a shoe repair jack in which the last may be moved into any desired position and still be convenient to the operator.

A further object of the invention is to provide a construction in which the last may be quickly adjusted and after having been adjusted locked against movement.

Another object of the invention is to provide a structure in which the support for the adjustable last arm is itself adjustable whereby the last and its supporting structure may be moved with respect to the base. j

lVith the above and other objects in View, the present invention consists in the combi nation and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion and minor details without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings Figure 1 is a side elevation. Fig. 2 is a front elevation. Fig. 3 is a plane view of the locking means for the last arm, and Fig. 4c is a view of the terminal of the last supporting arm.

In the drawings designates a tubular base common in jacks of this type. The upper open end of said base is provided with a slot 11 and extending from said tubular member on each side of said slot is a lug 12, said lugs being formed with alining apertnres 13, one of which is threaded. These lugs receive a screw lt by means of which the open end of the tubular base may be contracted. Mounted upon the base 10 is an L-shaped arm 15. This arm is provided at one end with the right angle extension 16.

sions is inserted within the open lend of the same. The vertically extending portion 18 of the arm is terminally provided with a bearing 19 which is split, the same being provided with a plurality of lugs 20 through which an adjusting screw 21 passes whereby the hearing may be contracted.

A second L-shaped arm 22 is provided, the horizontally extending portion 23 of said arm terminating in the split ring 2 formed with lugs 25 whereby the split-ring may be contracted. The vertically extending portion of the arm is formed with the right angle extension 25 which is reduced at 26 terminating in a squared reduced extension 27. The rounded reduced portion 26 is adapted to enter the split bearing 19 of the arm 15, the squared portion 27, extending beyond said arm. Mounted on said squared portion is a toothed disk 28. The bearing 19 is formed with spaced lugs 29 between which is pivoted a dog 30, said dog being disposed to engage within the notches of the toothed wheel 28. It will be noted by this arrangement that the arm 22 is free to rotate within the bearing 19 and that when the same has been rotated to the desired position, it being understood that during said rotation the dog 30 has been lifted, said dog is dropped into one of the notches of the disk 28 and the arm locked against further movement.

A last support 31 of the usual construction is supported within the split ring carried by the arm 22. The last is maintained in position on the support by the strap 32 which embraces the same and which passes through an opening 33 formed in a latch member 34 which is pivotally supported on the cars 35 of a collar 36 which embraces the last standard adjacent its base.

With aconstruction of this character the shoe may be brought into any desired position and its support firmly held against displacement. Thus the workman may stand directly in front of the jack at all times and in an upright position. It will also be noted that the arm 18 may be rotated with respect to the base 10 by loosening the screw 14, thus allowing the work to be conducted immediately above the supporting base irrespective of the position to which the arm 15 may be swung.

This extension is reduced and the shoulder}; The many advantages of construction of 17 formed thereby engages the tubular memthis character will be clearly apparent as it her when the reduced portion of the extenwill be noted that the same not only provides a jack which may be readily adjusted in various positions, but that the structure is simple andnot liable to get out; of order. It will also be seen that the devi'cemaybe' easily and economically manufactured and that the various parts may be readily'assembled.

lVhat I claim is:

1. A lasting jack comprising a-base, an

arm rotatably supported on the base, said armhaving. a vertical extension, and a sec-' ond arm rotatably mounted on thesa-id extensionto swingabout a horizontal axis and ma plane parallel with the plane of the vertical extension.

2. A lasting jack compr-isingsa base, an

arm rotatably supported on the base, said for contracting, said open'end, an L -shaped= arm having anextensionreceived Within the open 'end oi the base, the terminal of said arm: remote from said extension being split to providea bearing-,a second L-shaped arm having an extension received within said bearing, the end ofsaid extension projecting beyond the bearing and being, squared, a

notcheddisk arranged on said squared end,

a dog carried by the bearing and engaging in the notches of sa1d disk and a last support carriedby. sa1d second mentioned arm.

ls-A lasting jack comprisingv a base, an

arm rotatably supported on the base, said arm having a verticalextension, a second arm rotatably mounted on the sa1d extensionto swing about a horizontal axis and in a plane parallel With the plane of the vertical extension, means for locking said second" arm against movement and a last support carried by the second arm and adj ustable thereon.

5-. A lasting jack comprising a base, an arm rotatably supported on the base, said arm having a vertical extension, a bearingformed-at one endof said extension, and a second arm rotatably mounted on the said extension to SWlIlgfilbOUt ELhOIlZOIltill axis and'in a plane'parallelWith the plane-0t the vertical extension, said second arm being -'forme'd with. an extension adapted to be received Within the bearingaofthe vertical extensiomvwhereby said second arm is rotatably mounted on the said vertical extension,

6. A lasting jack comprising. a.base,an arm rotatably supported on the baseg-said arm having a verticalextension, a bearing. formed at one end of=sa1d extenslon, a sec-r 0nd arm rotatably mounted on the said'extension to swing about a horizontal axis and in a planeparallel With the plane of the verticallextension,said second arm beingformed with an extension adapted to be received Within the" bearing of" the verticalextension, whereby said secondlarln is ro-- tatably mounted on the vertical extension, means for locking: the second arm against movement, an'da last support carried by the second arm'and adjustable thereon.

In testimony whereof I afli'x my signature in the presence of tWo Witnesses. I JOHNTI. OBRIEN. Witnesses:

L'. J. LIBBING, AUGUST Gr. BUG.

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